/*****************************************************************************************
Copyright (c) 2002-2004 The UbixOS Project
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are
permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of
conditions, the following disclaimer and the list of authors. Redistributions in binary
form must reproduce the above copyright notice, this list of conditions, the following
disclaimer and the list of authors in the documentation and/or other materials provided
with the distribution. Neither the name of the UbixOS Project nor the names of its
contributors may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
$Id$
*****************************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include "ld.h"
ldLibrary *libs = 0x0;
int lib_c = 0x0;
int lib_s[10];
static elfHeader *binaryHeader = 0x0;
static elfSectionHeader *binarySectionHeader = 0x0;
static char *binaryShStr = 0x0;
static char *binaryDynStr = 0x0;
static elfDynSym *binaryRelSymTab = 0x0;
static elfPltInfo *binaryElfRel = 0x0;
static Elf32_Dyn *binaryElf32_Dyn = 0x0;
uInt32 ld(uInt32 got2,uInt32 entry) {
int i = 0x0;
int x = 0x0;
int rel = 0x0;
uInt32 *reMap = 0x0;
FILE *binaryFd = 0x0;
if (binaryHeader == 0x0) {
binaryFd = malloc(sizeof(FILE));
binaryFd->fd = (uInt32)got2;
fseek(binaryFd,0x0,0x0);
binaryHeader = (elfHeader *)malloc(sizeof(elfHeader));
fread(binaryHeader,sizeof(elfHeader),1,binaryFd);
}
if (binarySectionHeader == 0x0) {
binarySectionHeader = (elfSectionHeader *)malloc(sizeof(elfSectionHeader)*binaryHeader->eShnum);
fseek(binaryFd,binaryHeader->eShoff,0);
fread(binarySectionHeader,sizeof(elfSectionHeader),binaryHeader->eShnum,binaryFd);
if (binaryShStr == 0x0) {
binaryShStr = (char *)malloc(binarySectionHeader[binaryHeader->eShstrndx].shSize);
fseek(binaryFd,binarySectionHeader[binaryHeader->eShstrndx].shOffset,0);
fread(binaryShStr,binarySectionHeader[binaryHeader->eShstrndx].shSize,1,binaryFd);
}
for (i=0x0;i<binaryHeader->eShnum;i++) {
switch (binarySectionHeader[i].shType) {
case 3:
if (!strcmp((binaryShStr + binarySectionHeader[i].shName),".dynstr")) {
if (binaryDynStr == 0x0) {
binaryDynStr = (char *)malloc(binarySectionHeader[i].shSize);
fseek(binaryFd,binarySectionHeader[i].shOffset,0);
fread(binaryDynStr,binarySectionHeader[i].shSize,1,binaryFd);
}
}
break;
case SHT_DYNAMIC:
binaryElf32_Dyn = (Elf32_Dyn *)malloc(binarySectionHeader[i].shSize);
fseek(binaryFd,binarySectionHeader[i].shOffset,0);
fread(binaryElf32_Dyn,binarySectionHeader[i].shSize,1,binaryFd);
for (x = 0;x < binarySectionHeader[i].shSize / sizeof(Elf32_Dyn);x++) {
if (binaryElf32_Dyn[x].d_tag == 1) {
lib_s[lib_c] = binaryElf32_Dyn[x].d_un.d_ptr;
lib_c++;
}
}
break;
case 9:
rel = i;
break;
case 11:
if (binaryRelSymTab == 0x0) {
binaryRelSymTab = (elfDynSym *)malloc(binarySectionHeader[i].shSize);
fseek(binaryFd,binarySectionHeader[i].shOffset,0);
fread(binaryRelSymTab,binarySectionHeader[i].shSize,1,binaryFd);
}
break;
}
}
}
if (binaryElfRel == 0x0) {
fseek(binaryFd,binarySectionHeader[rel].shOffset,0x0);
binaryElfRel = (elfPltInfo *)malloc(binarySectionHeader[rel].shSize);
fread(binaryElfRel,binarySectionHeader[rel].shSize,1,binaryFd);
}
i = (entry/sizeof(elfPltInfo));
x = ELF32_R_SYM(binaryElfRel[i].pltInfo);
reMap = (uInt32 *)binaryElfRel[i].pltOffset;
*reMap = ldFindFunc(binaryDynStr + binaryRelSymTab[x].dynName,binaryDynStr);
//*reMap = ldFindFunc(binaryDynStr + binaryRelSymTab[x].dynName,(char *)(binaryDynStr + 1));
if (binaryFd) {
fclose(binaryFd);
}
return(*reMap);
}
/***
$Log$
Revision 1.1.1.1 2006/06/01 12:46:09 reddawg
ubix2
Revision 1.2 2005/10/12 00:13:28 reddawg
Removed
Revision 1.1.1.1 2005/09/26 17:14:01 reddawg
no message
Revision 1.13 2004/06/18 15:18:04 reddawg
bug fixes: did some double checking on pointers and 0x0 out memory
Revision 1.12 2004/06/17 14:14:44 reddawg
Fixed some potential problems
Revision 1.11 2004/06/17 13:05:14 reddawg
dynamic linking: fixed int6 issue problem was multiple rel's
Revision 1.10 2004/06/17 12:32:11 reddawg
the machine should just hlt
Revision 1.9 2004/06/17 11:58:10 reddawg
ld.so: Made a few changes to the way it functions hopefully it will
improve some of its performance.
Revision 1.8 2004/06/17 02:58:49 reddawg
Cleaned Out Dead Code
Revision 1.7 2004/06/17 01:09:24 reddawg
TCA: cvs update make and give me output
Revision 1.6 2004/06/16 23:11:34 reddawg
ld.so: now adds librarys it is a little more efficient does the lazy binding
Revision 1.5 2004/06/16 18:04:15 reddawg
Fixed typo printf <--> kprintf
Revision 1.4 2004/06/16 16:31:58 reddawg
ld.so: the dynamic linker works and has been tested
Revision 1.3 2004/06/16 13:52:51 reddawg
Start of userland LD
Revision 1.2 2004/06/01 01:30:43 reddawg
No more warnings and organized make files
Revision 1.1 2004/04/26 21:16:03 reddawg
Initial addition of the ubix LD
Revision 1.2 2004/04/26 13:20:42 reddawg
Turn off muffin
Revision 1.1 2004/04/26 13:13:25 reddawg
Initial Introduction of the UbixOS Format Utility into the source tree
END
***/
